Construction for level
● Seal diaphragm on the
mounting flange
Stainless steel, mat. no. 1.4404/316L, Monel 400, mat. no. 2.4360, Alloy B2, mat.
no. 2.4617, Alloy C276, mat. no. 2.4819, Alloy C22, mat. no. 2.4602, tantalum, PTFE
● Sealing surface
Smooth as per EN 1092‑1, form B1 or ASME B16.5 RF 125 … 250 AA for stainless
steel 316L, EN 2092‑1 form B2 or ASME B16.5 RFSF for the remaining materials
Sealing material in the pressure
caps
● For standard applications
FKM (Viton)
● For underpressure
applications on the mounting
flange
Copper
Minus side
● Seal diaphragm
Stainless steel, mat. no. 1.4404/316L
● Pressure caps locking screws
Stainless steel, mat. no. 1.4408
● Locking screw
Stainless steel ISO 3506-1 A4-70
● O-ring
FKM (FKM (Viton))
● Non-wetted parts materials
Electronics housing
● Low-copper die-cast aluminum GD-AlSi 12 or stainless steel precision casting,
mat. no. 1.4409/CF-3M
● Standard: Powder coating with polyurethane
D20 option: 2 coats: Coat 1: epoxy-based; coat 2: Polyurethane
● Stainless steel nameplate (1.4404/316L)
Pressure cap screws Stainless steel ISO 3506-1 A4-70
Measuring cell filling Silicone oil
● Mounting flange fill fluid
Silicon oil or a different design
Process connection
● Plus side
Flange as per EN and ASME
● Minus side
1
/
4
‑18 NPT female thread and flange connection with M10 fastening screw thread in
accordance with DIN 19213 (M12 for PN 420 (MAWP 6092 psi)) or
7
/
16
-20 UNF in
accordance with EN 61518
Electrical connection Screw terminals
Cable inlet using the following screwed joints:
● M20 x 1.5
● ½-14 NPT
● Han 7D/Han 8D connector
1)
● M12 connector
1)
Han 8D is identical to Han 8U.
Technical data
8.6 Construction
SITRANS P320/P420 with 4 to 20 mA/HART
98 Compact Operating Instructions, 09/2018, A5E38874562-AB
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